JP4342677B2 - Method for controlling adhesion state of treatment agent to synthetic fiber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for controlling the adhesion state of a treatment agent to a synthetic fiber in a spinning process. In recent years, in the spinning process of synthetic fibers, the speed has been further increased. For this reason, fluctuations in the adhesion state such as the amount of treatment agent adhering to the synthetic fibers and the uniformity of adhesion greatly affect the productivity and quality of the synthetic fibers. It has become like this. In order to spin high-quality synthetic fibers with high productivity, in the synthetic fiber spinning process, we quickly grasp the state of the treatment agent adhering to the running synthetic fibers and run based on these synthetic fibers. It is required to immediately and appropriately control the state of adhesion of the treatment agent to the surface. The present invention relates to a method for controlling the adhesion state of a treatment agent to a synthetic fiber in a spinning process that meets such requirements.
[0002]
[Prior art]
Conventionally, as a method for measuring the adhesion state of the treatment agent to the synthetic fiber, such as the adhesion amount and the uniformity of adhesion, the treatment agent is extracted from the synthetic fiber to which the treatment agent is adhered with an organic solvent, and the adhesion amount is generally measured. In addition to a typical method, there is known a method (JP-A-3-185180) for measuring the adhesion spots of a treating agent by observing a synthetic fiber adhered with the treating agent with a microscope. However, these conventional methods are methods for sampling synthetic fibers to which a treating agent is attached from, for example, a spinning process of synthetic fibers, and measuring the adhesion state of the treating agent with respect to the sampled synthetic fibers. However, there is a problem that a considerable time delay is caused to reflect in the spinning process.
[0003]
As a method for measuring the amount of adhesion of the treatment agent to the synthetic fiber and the adhesion state, such as uniformity of adhesion, the synthetic fiber spinning process is used instead of sampling the synthetic fiber with the treatment agent attached thereto, for example, from the spinning process. There is also known a method in which a synthetic fiber traveling in is directly measured. In this conventional method, a resistance value of a running synthetic fiber to which a treatment agent is adhered is obtained using a super insulation resistance meter, and the adhesion spot of the treatment agent is measured from the obtained resistance value (Japanese Patent Laid-Open No. 58-54013). , Japanese Laid-Open Patent Application No. 59-116404), irradiating a running synthetic fiber to which a treatment agent is attached with near-infrared rays, second-order differential analysis of the near-infrared spectrum obtained as reflected light, and measuring the amount of treatment agent attached There is a method (Japanese Patent Laid-Open No. 7-310223). In these conventional methods, since the synthetic fiber, for example, the running synthetic fiber to which the treating agent is attached in the spinning process is directly measured, the measurement result can be immediately reflected in the spinning process of the synthetic fiber. There is. However, in the conventional method using a super insulation resistance meter, it is necessary to bring the detection part into contact with the running synthetic fiber. Therefore, the synthetic fiber is easily damaged and obtained when the treatment agent has low conductivity. There is a problem that the resistance value is strongly influenced by moisture. Further, the conventional method of irradiating near infrared rays has a problem that it is necessary to irradiate special light rays in a wavelength region of 1100 to 2500 nm, and the second derivative analysis of the near infrared spectrum obtained as reflected light is troublesome. . Both of these conventional methods have a problem that the state of adhesion of the treatment agent cannot be detected with the naked eye.
[0004]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to quickly grasp the adhesion state of the treatment agent to the running synthetic fiber by a simple means that can be detected with the naked eye in the spinning process of the synthetic fiber, and run the synthetic fiber based on this. The present invention provides a method for immediately and appropriately controlling the state of adhesion of the treatment agent to the surface.
[0005]
[Means for Solving the Problems]
The present invention that solves the above-described problems is a method for controlling the state of adhesion of a treatment agent to a synthetic fiber in a spinning process, wherein the treatment agent previously has a fluorescence emission peak in the visible light wavelength region of 400 to 600 nm. The fluorescent substance-containing treatment agent containing the substance is attached to the running synthetic fiber using the following attachment device, and the running synthetic fiber to which the fluorescent substance-containing treatment agent is attached is irradiated with light from the excitation light source, Fluorescence is emitted from the traveling synthetic fiber, and the intensity of the emitted fluorescence is measured with a photometer through a filter that transmits visible light in the wavelength region of 400 to 600 nm, and emitted from the arithmetic and control unit based on the measured value. The present invention relates to a method for controlling the adhesion state of a treatment agent to a synthetic fiber, wherein the adhesion state of the treatment agent to the traveling synthetic fiber is controlled by adjusting the operation of the adhesion device according to a signal.
Adhering device: Adhering device selected from roller oiling device, metal oiling device and spray oiling device.
[0006]
In the present invention, when controlling the state of adhesion of the treatment agent to the synthetic fiber in the spinning process, the treatment material contains a fluorescent material in advance, and the fluorescent material-containing treatment agent containing the fluorescence material is added to the attachment device. To adhere to the running synthetic fibers in the spinning process. Needless to say, the treating agent used here is a synthetic fiber treating agent, and in the case of the present invention, this treating agent is a spinning oil agent. Such a treatment agent is usually composed of a lubricant component as a main component, and an emulsifier or antistatic agent component, and further a functional agent component or the like according to the purpose. Such lubricant components include polyethers, (poly) ether esters, silicone oils, aliphatic esters, aromatic esters, mineral oils, and the like, and emulsifiers and antistatic components include nonionic surfactants, There are various surfactants such as anionic surfactants, cationic surfactants, amphoteric surfactants, and other functional agent components include antiseptics, rust inhibitors, antifoaming agents, extreme pressure additives, viscosity index There are improvers and the like.
[0007]
The treating agent used in the present invention includes a polyether having a molecular weight of 700 to 20000, an aliphatic ester having 20 to 60 carbon atoms, and a mineral oil having a viscosity at 25 ° C. of 2 × 10 ⁻⁶ to 4 × 10 ⁻⁴ m ² / s. Those containing 50 to 95% by weight of one or more lubricant components selected from The above polyethers include those obtained by addition polymerization of alkylene oxides such as ethylene oxide and propylene oxide to compounds having active hydrogen, and aliphatic esters include aliphatic monohydric alcohols and aliphatic monocarboxylic acids. Esters, aliphatic monohydric alcohols and aliphatic polycarboxylic acid esters, aliphatic polyhydric alcohols and aliphatic monocarboxylic acid esters, and mineral oils include liquid paraffin oil. .
[0008]
There are various types of fluorescent substances to be contained in the treatment agent. In the present invention, a fluorescent substance having a fluorescent emission peak in the visible light wavelength region of 400 to 600 nm is used. Such fluorescent materials include 2,5-bis (5′-t-butyl-2′-benzoxazolyl) thiophene, pyrene, fluorescein, tetraiodofluorescein, 8-anilino-1-naphthalene ammonium sulfonate, 7- And dimethylamino-4-methylcomaline.
[0009]
In the fluorescent substance-containing treatment agent containing the fluorescent substance in the treatment agent, the content ratio of the fluorescent substance with respect to the treatment agent is arbitrary, but as such a fluorescent substance-containing treatment agent, the fluorescent substance per 100 parts by weight of the treatment agent Are preferably contained in a proportion of 0.01 to 5 parts by weight, and more preferably those containing a fluorescent substance in a proportion of 0.05 to 3 parts by weight.
[0010]
There are various types of treatment agent adhesion devices. In the present invention, the adhesion device using an adhesion device selected from a roller oiling device, a metal oiling device, and a spray oiling device is used to run in the spinning process. A fluorescent substance-containing treatment agent is attached to the synthetic fiber.
[0011]
In the present invention, as described above, in the spinning process, the fluorescent material-containing treatment agent that previously contained a specific fluorescent material in the treatment agent is attached to the synthetic fiber that travels using a specific attachment device. Thus, the traveling synthetic fiber to which the fluorescent substance-containing treatment agent is attached is irradiated with light from the excitation light source, and fluorescence is emitted from the traveling synthetic fiber. The excitation light source used here is arbitrary as long as it excites the fluorescent substance in the fluorescent substance-containing treatment agent adhering to the traveling synthetic fiber with the light emitted from the excitation light source and emits fluorescence from the fluorescent substance. A xenon lamp, a mercury lamp, or the like can be used, but as described above, since a fluorescent material having a fluorescence emission peak in the wavelength region of visible light is used, a general incandescent bulb is used as such an excitation light source. It can also be used.
[0012]
In the present invention, fluorescence is emitted from the traveling synthetic fiber in this way, and the operation of the attachment device is adjusted based on the intensity of the emitted fluorescence, thereby controlling the state of adhesion of the treatment agent to the traveling synthetic fiber. Since the intensity of the fluorescence emitted from the running synthetic fiber can be detected with the naked eye, the operation of the attachment device can be adjusted manually according to the fluorescence intensity detected with the naked eye.
[0013]
In the present invention, in order to control the state of adhesion of the treatment agent to the traveling synthetic fiber more reliably, the intensity of the fluorescence emitted from the traveling synthetic fiber is measured with a photometer, and based on the measured value, Adjust the operation. In this case, in order to control the adhesion of the treatment agent to the running synthetic fiber more reliably and automatically, the intensity of the fluorescence emitted from the running synthetic fiber is measured with a photometer, and the measured value is arithmetically controlled. It is preferable to adjust the operation of the attachment device by a signal generated from the arithmetic control device after input to the device and performing arithmetic processing here. In this case, a set value corresponding to the synthetic fiber processing purpose at that time is input to the arithmetic and control unit. For example, according to the difference between the treatment agent adhesion amount calculated from the fluorescence intensity measurement value and the treatment agent adhesion amount set in advance in the computation control device, the computation control device The operation of the attachment device is adjusted by the signal emitted from.
[0014]
In the present invention, in order to easily sense or measure the intensity of fluorescence emitted from the traveling synthetic fiber, the fluorescent material-containing treatment agent adhered to the traveling synthetic fiber between the traveling synthetic fiber and the photometer. A filter that matches the fluorescence emission peak of the fluorescent substance in the inside is interposed. In the present invention, since a fluorescent substance having a fluorescence emission peak in the wavelength region of 400 to 600 nm is used, a filter that transmits visible light in the wavelength region of 400 to 600 nm is interposed.
[0015]
The operation of the attachment device can be adjusted depending on the type of attachment device used. When the adhering device is a roller oiling device, the number of rotations of the oiling roller with which the traveling synthetic fiber comes into contact and / or its position (the height position or inclination of the oiling roller with respect to the traveling synthetic fiber) is adjusted. When the adhesion device is a metal oiling device, the amount of the fluorescent material-containing treatment agent supplied to the oil supply groove formed on the metal surface through which the traveling synthetic fiber passes and / or the position of the oil supply groove (the synthetic fiber traveling) Adjust the height and inclination of the oil groove relative to When the attachment device is a spray oiling device, the supply amount of the fluorescent material-containing treatment agent to the nozzle that sprays the fluorescent material-containing treatment agent to the traveling synthetic fiber and / or the position of the nozzle (the traveling synthetic fiber and The distance between the nozzle and the inclination of the nozzle with respect to the running synthetic fiber is adjusted.
[0016]
In the adjustment of the operation of the attaching device as described above, the number of rotations of the oiling roller can be adjusted by adjusting the operation of the motor connected thereto. Moreover, the supply amount of the fluorescent substance-containing treatment agent to the oil supply groove and the nozzle can be adjusted by adjusting the operation of the metering pump connected thereto. Further, the positions of the oiling roller, the oil supply groove, and the nozzle can be adjusted by adjusting the operation of the cylinder mechanism that supports them.
[0017]
According to the present invention described above, since the adhesion state of the treatment agent to the traveling synthetic fiber and the adhesion state such as adhesion uniformity can be quickly grasped by a simple means that can be detected with the naked eye, the synthetic fiber traveling based on this can be understood. It is possible to immediately and appropriately control the state of adhesion of the treatment agent to the resin, and to greatly improve the productivity and quality of the synthetic fiber. Such a control method can be applied in various processes for producing or processing synthetic fibers, but is more effective in the spinning process as in the present invention due to its properties.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an overall view schematically showing an embodiment of the present invention. Here, the fluorescent substance-containing treatment agent is attached to the traveling synthetic fiber 11 by the roller oiling device 21. The roller oiling device 21 includes a bathtub 22 and an oiling roller 23, and an aqueous liquid 24 of a fluorescent substance-containing treatment agent that has previously contained a fluorescent substance in the treatment agent is injected into the bathtub 22. The oiling roller 23 is connected to a motor (not shown), and its bearing is supported by a cylinder mechanism (not shown). When the traveling synthetic fiber 11 comes into contact with the surface of the rotating oiling roller 23, the aqueous liquid 24 lifted from the bathtub 22 adheres to the surface of the oiling roller 23, and the adhesion state is as follows. The motor is controlled by adjusting the operation of a motor (not shown) connected to the oiling roller 23 and a cylinder mechanism (not shown) that supports the bearing of the oiling roller 23.
[0019]
On the downstream side of the roller oiling device 21, an excitation light source 31 is provided facing the traveling synthetic fiber 11, and a light emission side filter 32 is interposed between the excitation light source 31 and the traveling synthetic fiber 11. . When the synthetic fiber 11 traveling from the excitation light source 31 through the light emission side filter 32 is irradiated with light, fluorescence is emitted from the fluorescent material in the aqueous liquid 24 attached to the traveling synthetic fiber 11. A photometer 33 is provided at a position where the emitted fluorescence is received, and a light receiving side filter 34 is interposed between the running synthetic fiber 11 and the photometer 33. The photometer 33 is connected to the calculation control device 35, and the calculation control device 35 is connected to the roller oiling device 21.
[0020]
In the illustrated embodiment, the amount of treatment agent attached to the synthetic fiber 11 calculated from the measured value of the fluorescence intensity measured by the photometer 33, and the amount of treatment agent adhesion previously set in the arithmetic and control unit 35, In accordance with the difference between the two, the operation of a motor (not shown) connected to the oiling roller 23 is adjusted by a signal generated from the arithmetic and control unit 35, and the amount of treatment agent attached to the traveling synthetic fiber 11 is set as set. It comes to control. Although illustration is omitted, when the photometer 33 and the calculation control device 35 are omitted, the intensity of the fluorescence transmitted through the light receiving side filter 34 is detected with the naked eye, and based on this, it is connected to the oiling roller 23 by manual operation. The operation of a motor (not shown) can also be adjusted. When the arithmetic and control unit 35 is omitted, the operation of a motor (not shown) connected to the oiling roller 23 can be adjusted manually based on the measured value of the fluorescence intensity measured by the photometer 33.
[0021]
【Example】
According to the embodiment described above with reference to FIG. 1, the amount of the treatment agent attached to the traveling synthetic fiber was controlled under the following conditions.
Conditions Synthetic fiber: melt-spun polyethylene terephthalate yarn {83 dtex (75 denier) / 36 filament}
Synthetic fiber running speed: 5000 m / min Adhering device: Roller oiling device Treatment agent: 30% by weight of mineral oil having a viscosity of 30 × 10 ⁻⁶ m ² / s and isotridecyl stearate 25 as a lubricant component Spinning oil containing a weight percent and the balance comprising a surfactant as an emulsifier or antistatic component. Aqueous liquid adhering to synthetic fiber: 2,5-bis (5 ′ as a fluorescent substance per 100 parts by weight of the above treating agent -T-Butyl-2'-benzoxazolyl) thiophene 10% by weight aqueous emulsion of fluorescent substance-containing treatment agent containing 1 part by weight Target amount of treatment agent attached to synthetic fiber (set value) ): 1% by weight as a treating agent for synthetic fibers
Excitation light source: Blacklight FL4BLB (manufactured by Toshiba)
Emission filter: 400 nm interference filter (manufactured by Nippon Vacuum Optics)
Photometer: Fluorometer (manufactured by Nippon Vacuum Optics Co., Ltd.) equipped with a 600 nm interference filter as a light-receiving filter
[0022]
Under the above conditions, the treatment was continued for 2 hours, and the fluorescence intensity was continuously recorded. A total of 120 points were extracted from this record in 1 minute units, and the amount of treatment agent attached was calculated from the fluorescence intensity at each extraction point, and the fluctuation range, average value, and standard deviation of the amount of attachment were determined. The fluctuation range was 0.95 to 1.05, the average value was 1.00, and the standard deviation was 0.029.
[0023]
For comparison, after processing for the first 10 minutes in the same manner as in the above embodiment, the processing is continued for another 2 hours without causing the arithmetic and control unit to function, and thus without controlling the amount of the processing agent attached to the synthetic fiber. The fluorescence intensity during this period was continuously recorded. From this record, the fluctuation range, average value, and standard deviation of the adhesion amount were obtained in the same manner as described above. The fluctuation range was 0.83 to 1.18, the average value was 0.97, and the standard deviation was 0.104.
[0024]
【The invention's effect】
As is clear from the above, the present invention described above has a simple means that can easily detect the adhesion of the treatment agent to the synthetic fiber traveling in the spinning process with the naked eye, and the synthetic fiber that travels based on this. There is an effect that it is possible to immediately and appropriately control the adhesion state of the treatment agent to the surface.
[Brief description of the drawings]
FIG. 1 is an overall view schematically showing an embodiment of the present invention.
[Explanation of symbols]
11 .. Synthetic fiber, 21 .. Roller oiling device, 23 .. Oiling roller, 31 .. Excitation light source, 33 .. Photometer, 35.

Claims (4)

A method for controlling the state of adhesion of a treatment agent to a synthetic fiber in a spinning process , wherein the treatment agent contains a fluorescent material having a fluorescent emission peak in the visible light wavelength region of 400 to 600 nm in advance. the treatment agent adhered to the synthetic fibers running with the biasing desorption device below, is irradiated with light from the excitation light source to the synthetic fibers running attached a fluorescent substance-containing treatment agent, to emit fluorescence from a running synthetic fiber The intensity of the emitted fluorescence is measured with a photometer through a filter that transmits visible light in the wavelength region of 400 to 600 nm, and the operation of the adhesion device is adjusted by a signal emitted from the arithmetic and control unit based on the measured value. And the adhesion state control method of the processing agent to a synthetic fiber characterized by controlling the adhesion state of the processing agent to the synthetic fiber to drive | work.
Adhering device: Adhering device selected from roller oiling device, metal oiling device and spray oiling device. Fluorescent material, 2,5-bis (5'-t-butyl-2'-benzoxazolyl) thiophene, pyrene, Furuorese in, tetra-iodo fluoride receptacle in, 8-anilino-1-ammonium naphthalenesulfonic acid and 7 The method for controlling the adhesion state of a treatment agent to a synthetic fiber according to claim 1 , wherein the treatment agent is selected from -dimethylamino-4-methylcomaline. The method for controlling the state of adhesion of a treatment agent to a synthetic fiber according to claim 1 or 2 , wherein the treatment agent containing the fluorescent material contains 0.01 to 5 parts by weight of the fluorescent material per 100 parts by weight of the treatment agent. Claim 1, 2 or adhesion state control method of the processing agent to the synthetic fibers 3, wherein the treatment agent is one containing 50 to 95 wt% of the lubricant component below.
Lubricant component: one selected from a polyether having a molecular weight of 700 to 20000, an aliphatic ester having 20 to 60 carbon atoms, and a mineral oil having a viscosity of 2 × 10 ⁻⁶ to 4 × 10 ⁻⁴ m ² / s at 25 ° C. Or two or more

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